IDirectDrawVideo::CanUseScanLine method (amvideo.h)
[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
The CanUseScanLine method determines whether the renderer will check the current scan line when drawing.
Syntax
HRESULT CanUseScanLine(
long *UseScanLine
);
Parameters
UseScanLine
Pointer to a value indicating whether the renderer will use scan line information. OATRUE indicates the renderer will check the current scan line when drawing; OAFALSE indicates it will not.
Return value
Returns an HRESULT value.
Remarks
For a description of the use of scan line detection in the DirectShow video renderer, see IDirectDrawVideo::UseScanLine.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 2000 Professional [desktop apps only] |
| Minimum supported server | Windows 2000 Server [desktop apps only] |
| Target Platform | Windows |
| Header | amvideo.h (include Dshow.h) |
| Library | Strmiids.lib |